Citação norma APA

Murphy , R. (1998). Essential english grammer: A self study reference and practice book for elementary students of english (2nd ed.). Cambridge University Press.

Citação norma Chicago

Murphy , Raymond. Essential English Grammer: A Self Study Reference and Practice Book for Elementary Students of English. 2nd ed. New Delhi: Cambridge University Press, 1998.

Citação norma MLA

Murphy , Raymond. Essential English Grammer: A Self Study Reference and Practice Book for Elementary Students of English. 2nd ed. Cambridge University Press, 1998.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.